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Keywords: stride frequency
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Journal Articles
J Exp Biol (2019) 222 (20): jeb198705.
Published: 16 October 2019
... lengths are compensated for by high stride frequencies, ranging beyond 40 Hz. This is mainly achieved by a combination of short stance phases (down to 7 ms) and fast leg swing movements (up to 1400 mm s −1 ). The legs of one tripod group exhibit almost perfect synchrony in the timings of their lift-offs...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (17): jeb202895.
Published: 3 September 2019
.... The exotendon applies assistive forces to the swinging legs, increasing the energy optimal stride frequency. Runners then adopt this frequency, taking faster and shorter strides, and reduce the joint mechanical work to redirect their center of mass. Our study shows how a simple spring improves running economy...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (5): 676–685.
Published: 1 March 2016
...Samuel Rubin; Maria Ho-Yan Young; Jonathan C. Wright; Dwight L. Whitaker; Anna N. Ahn ABSTRACT The Southern California endemic mite Paratarsotomus macropalpis was filmed in the field on a concrete substrate and in the lab to analyze stride frequency, gait and running speed under different...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (11): 1944–1956.
Published: 1 June 2012
...Tim W. Dorn; Anthony G. Schache; Marcus G. Pandy SUMMARY Humans run faster by increasing a combination of stride length and stride frequency. In slow and medium-paced running, stride length is increased by exerting larger support forces during ground contact, whereas in fast running and sprinting...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (15): 2551–2556.
Published: 1 August 2010
... muscles of insects (550 Hz) and toadfish (200 Hz) far exceed the contraction frequencies observed in weight-bearing locomotory muscles, which have maximum documented frequencies below 15–30 Hz. Laws of scaling, however, predict that smaller arthropods may employ stride frequencies exceeding this range...
Journal Articles
J Exp Biol (2008) 211 (6): 935–944.
Published: 15 March 2008
... incline information from all areas of the track. Measurements were made from six horses over a speed range of 9 to 13 m s –1 . Foot-fall timings were used to calculate variables,which included stance duration, protraction duration, stride frequency and duty factor. The relationship between track incline...
Journal Articles
J Exp Biol (2006) 209 (2): 238–248.
Published: 15 January 2006
.... * Author for correspondence (e-mail: dalford@duke.edu ) 8 11 2005 © The Company of Biologists Limited 2006 2006 design in nature animal locomotion optimality theory optimal speed maximum range speed optimal frequency stride frequency wing beat frequency Strouhal number force...
Journal Articles
J Exp Biol (2003) 206 (22): 3923–3934.
Published: 15 November 2003
...Duncan J. Irschick; Bieke Vanhooydonck; Anthony Herrel; Anemone Andronescu SUMMARY Stride length, stride frequency and power output are all factors influencing locomotor performance. Here, we first test whether mass-specific power output limits climbing performance in two species of geckos...
Journal Articles
J Exp Biol (2002) 205 (15): 2211–2216.
Published: 1 August 2002
... seems to adapt to muscle use, and its stiffness seems to be`tuned' to the frequency of normal muscle use. * e-mail: Stan.Lindstedt@nau.edu 13 5 2002 © The Company of Biologists Limited 2002 2002 elastic recoil strain energy eccentric hopping stride frequency titin...
Journal Articles
Journal Articles
J Exp Biol (1993) 174 (1): 185–197.
Published: 1 January 1993
.... At low temperatures (15°C and 22°C), stride frequency during burst running is nearly identical to the optimal cycling frequency for in vitro power output, suggesting that maximum power output may limit hindlimb cycle frequency in vivo . However, at higher temperatures (35°C and 42°C), the optimal cycling...
Journal Articles
J Exp Biol (1993) 174 (1): 81–95.
Published: 1 January 1993
.... The smaller animals meet the demands of increasing speed by increasing stride length rather than stride frequency, as would be expected in a smaller species. Our results show that juvenile potoroos diverge significantly from models based only on adult animals in incremental changes in stride frequency, length...
Journal Articles